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Last active July 20, 2025 11:04
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ssd device life smart notes
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ssd-device-life-smart-notes.md
  • Converting "Data Units Written" to "Total Host Writes"
    • At least for one disk CrystalDiskInfo reported both
      • Specific examples values
        • Total Host Writes (THW): 239GB (value reported in "top rightish" of window - screenshot in article)
        • Data Units Written (DUW): 0x7ac9a = 502938 (hex value reported in some row of table in "lower halfish" of window)
    • Adapting sample formula
      • (DUW * 1000 * 512) / (1024 * 1024 * 1024)
      • (502938 * 1000 * 512) / (1024 * 1024 * 1024)
      • 239.81952667236328
    • One reason to bother with this calculation is that it may be easier to obtain THW via gsmartcontrol (e.g. on a linux box) - that makes using windows unnecessary to make the measurement
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